Key-duplicating machine



' 3. O. ROREM.

KEY DUPLICATING MACHINE- APPLICATION FILED APR. 9. 1920.

1,38 1,747. Patented June 14, 1 921.

3 SHEETSSHEET I.

c wvemtoz y 5Q fia/m/v @51 Km J a S. O. ROREM.

KEY DUPLICATlNG MACHINE. APPLICATION FILED Ame. 1920.

1,381 ,747. PatentedJune 14, 192i.

3 SHEETS-SHEET 2- 1*) f1 E..E I 2 gvwemtoz /5 71mm, 7' W KEY DUPLICAHNGMACHINE. APPLICATION FILED APR-9.1920

1,381,747. Patented June 14,1921.

3 SHEETSSHEET 3- amoemtoz SILAS 0. Ronnie", or sroux CITY, iovrii.

KEY-DUPLICATING MACHINE.

Specification of Letters Patent. Patented 14 1921: g u

Application filed. April 9, 1920. Serial No. 372,727.

To all whom it may concern:

Be it known that I, SILAS OvROREM, a citizen of the United States, and aresident of Sioux City, in the countyof l/Voodbury and State of Iowa,have invented new and useful Improvements in Key-Duplicating Machines,of which the following is a specification.

The present invention is a key duplicating machine, the principal objectbeing to provide a machine wherein notches may be cut in a key blank atpoints coincident with the notches of an original or pattern key andwhich will cut the notches the same depth and width as the notches inthe pattern key.

Another important object of the inven tion resides in the provision of akey duplicating machine wherein the pattern key and key blank are heldin parallel relation and in transverse alinement with each other so thatthe blank will be cut or notched at points coincident with the notchesin the pattern key.

Further, it is the purpose of the invention to providea machine whichafter the pattern key and key blank have been arranged incoincidingrelation. it will be unnecessary to disturb either the key or blankinorder to successively cut the blank at different points along its edge,but that the machine is so constructed as to permit the blank andpattern key to be advanced across a cutter prior to eachfcuttingoperation. A

The invention also comprehends a rotating cutter and a gage so arrangedwith respect to the cutter asto cut notches in the key blank of the samedimensions as the notches in a pattern or original key.

Another'object of the invention resides in the provision'ofa keyduplicating machine which may be driven either by hand onmotor, which issimple in construction, consists" of few parts that are easily assembledand disassembled, and which may be manufactured and soldata minimumcost.

-With these and other objects and advantages kind, the inventionincludes the combination of elements, constructions and arrangements ofparts, operations and specific features, all of which will behereinafter enlarged upon and explicitly defined in theisubjoinedclaims; l r *On the drawings,

Figure l ls a side elevation of a key dupl cating machine constructed inaccordance with my invention; i

Fig. 2 is a rear end elevation of the same; i F 1g. 3 IS a verticalsectional view of the machine;

Fig. 4: is a front end elevation thereof;-

Fig. 5 is a perspective of the movable carriage embodied in theinvention;

Fig. 6 s a perspective of the horizontally and longitudinally movableplate included in the invention;

Fig. 7 is a vertical sectional View. taken on line 7-7 of Fig. 3;

F g. 8 is a horizontal sectional view taken on l ne 8-8 of Fig. 3;

Fig. 9 is a perspective of the pattern key andkey blank holding plate;and

Fig. 10 is a perspective of the gage blade detached from the machine.

Referring in detail to the drawing, wherein like characters of referencedesignate corresponding parts throughout the several views, the numeral5 designates the base of the machine which is provided with beveledparallel walls 6 at itslongitudinal edges. The inner face of the bevelededges of the walls 6 are cut away to afford parallel longitudinallyinclined guideways 7. v

Mpvable longitudinally of the base 5'is a carnage or slide 8 providedwith parallel inclined sills upon its under face and at its longitudinaledges which are slidably re ceived in the inclined guideways 7. Theouter faces of the sills 9 arecut away at their lower edges in matingrelation to the beveled edges of the walls 6 as indicated at 10 whiletheir under faces are inclined in the same plane as the guideways 7. Theupper face of the slide 8 is provided with upstanding longitudinalguides 11 at its longitudinal edges and slidably mounted upon this upperface isa plate 12 provided with parallel tongues 13 resting upon. theupper face of the slide and abutting the guides 11 which retain theplate against lateral movement dpring the longitudinal adjustment of thep ate, 7 a y I y 7 Movable with the plate 12 and also adapt ed foradjustment transversely of this plate is a key holding plate 1d formedwith transversely arranged stepped parallel tongues at its opposite endswhich are received in i transverse stepped guideways or rabbe ts 15formed 1n the upper face of the plate 12. 1 10 .Plates 17 are securedtothe opposite ends of the plate 14 between which plates and the oppositewall of each of the recesses the key and blank are positioned. In orderto posi-' tion the key and blank in alinement so that the blank willbenotched or cut at a point in 'alinement with the notch in the patternkeyian indicating mark 14: is inscribed in the plate 14; adjacent eachof the recesses and are disposed in alinement with each other and withwhich the ends of the blank and key coincide when thelatter are properlypositioned. I g

In order to move the carriage 8 up and down the inclined ways and tomove the plate 12 relative to the carriage handles 19 and 21 areattached to the inner ends of these members. Likewise, a handle 18 isprovided for the plate 14 for moving the same transversely of the plate12.

Extending from the inclined walls 6 are pairs of uprights 22 t the upperends of which parallel horizontal bars 23 are connected. A shaft 24L isj ournaled at the outer ends of the bars 23 and fixed on this shaft is acircular knife 25. A pulley 26 is fixed to one end of the shaft 24: andpassing around this pulley is a drive belt 27 which is driven by arelatively large drive wheel 28 supported upon a stub-shaft 29 extendinglaterally from one of the uprights 22 at the inner end of the base. Thisdrive wheel 28 has a drive pulley 3O fixed thereto about which a drivebelt 31is engaged which may be driven by any source of power (notshown). Supported in the horizontal bars 23 at a point between therotary knife 25 and the stub-shaft 29 is a rod or shaft 32 upon which asleeve 33 is mounted for longitudinal adjustment and is retained inadjusted position through the medium of set-screws or other fastenings34. The sleeve 33 is formed with a downwardly disposed extension 35 atone end thereof and to which extension a horizontally disposed gageblade 36 is attached and that extends parallel to the rotary knife andin longitudinal alinement therewith.

Assuming that the parts of the machine are in the position illustratedin Fig. '1 and the pattern key and key blank arranged as indicated indotted lines, the horizontally and longitudinally movable plate 12 isdrawn toward the operator until the key blank is disposed forwardly ofthe rotary knife. The carriage-8 is now drawn up the inclined trackwaysuntil the lower longitudinal edge of the gage blade engages the lower orhori zontal wall of the notch in the pattern key and holding thecarriage in this elevated position the plate 12 is now pushed forwardly,

carrying the key blank in the path of the rotating knife. Should not theinitial operation be suflicient to cut the notch wide enough the keyholding plate is moved transversely of the longitudinally movable plate12 and this plate is then drawn toward the operator to again advance thekey blank in the path of the rotating cutter. In order to out successivenotches in the key blank the carriage is pushed down the inclinedtrackways after each cutting operation and the key holding plate thenadjusted transversely and the carriage and plate operated in the abovemanner. It is to be understood that the form of my invention herewithshown and described is to be takenas a preferred example of the same,and that various changes in the shape, size and arrangement of parts maybe resorted to without departing from the spirit of the invention or thescope of the subjoined claims. I Having thus described my invention,what I claim as new and desire to secure and protect by Letters Patentof the United States is: I

1. Ina key duplicating machine, abase provided with inclined trackways,a carriage movable in the inclined trackways, a plate longitudinallymovable upon the carriage, means for retaining a key and key blank inparallel spaced relation, said means being capable ofadjustmenttransversely of the plate, a rotary cutter supported above theplate,1a gage bladearranged in advance of the cutter, the carriage beingadapted to be moved up the inclined trackways until the gage bladeengages the bottom wall of one of the notches in the pattern key,whereupon advancing the horizontal and longitudinally movable plate theblank will'be cut to the same depth asthe depth of the notches in thepattern key.

2. In a key duplicating machine, a: base, inclined trackways disposedlongitudinally of the base, a carriage, parallel inclined sills disposedupon the under face of thecarriage and disposed in the trackways, ahandlefor shifting the carriage, a plate supported on the upper face ofthecarriage and longitudinally adjustable thereon, means for supportinga pattern key and key blank edgewise and in spaced parallel relation,-a. rotary cutter supported above the plate, and means for limiting theupward movement of the carriage and inclined trackways after the samehas been moved to a point where the key blank will be cut to a depthcorresponding to the depth of the cut in the pattern key upon advancingthe plate toward the cutter.

3. In a key duplicating machine, a base provided with inclined paralleltrackways, pairs of parallel uprights extending from the base, avhorizontal bar connected with each pair of uprights, a shaft journaledin the outer ends of the bars, a cutter fixed to rotate therewith, adrive wheel supported on one of the uprights, a driving elementoperatively connecting the drive wheel and shaft, a gage blade supportedbetween the horizontal bars and extending longitudinally of the base, acarriage movable in the inclined trackways, a plate mounted on thecarriage for longitudinal movement in a horizontal plane, means on theplate for retaining a pattern key and key blank in spaced parallelrelation and coincident to each other, the carriage being adapted to bemoved toward the higher end of the trackways until the gage bladeengages the lower wall of the notch in the key and held in such positionwhile the plate is advanced toward the cutter.

4. In a key duplicating machine, an in clined base, a carriage slidablymounted thereon, means on the carriage for supporting a key and keyblank in transverse alinement and capable of both longitudinal andtransverse adjustment, a rotary cutter supported above the carriage atthe lower end of the base, a gage blade disposed in advance of thecutter and adapted to engage any one of the notches in the key upon theascent of the carriage, whereupon advancing the key and blank holdingmeans toward the cutter the latter will be cut the same depth as thenotches of the key and in eoinciding relation thereto. i

5. In a key duplicating machine, a base, inclined parallel trackways, acarriage slidably mounted in the trackways, a rotary cutter supportedabove the carriage, drive means supported on the base for driving thecutter, a gage blade extending longitudinally of the base and arrangedin advance of the cutter, a plate mounted upon the upper face of thecarriage and capable of movement longitudinally of the same, a key andblank holding plate mounted on the first mentioned plate and adapted formovement transversely of the same, the carriage being adapted to bemoved toward the highest end of the trackways until the gage bladeengages the lower wall of a notch in the key whereupon above the base atthe lower end of the trackways, a gage blade supported in advance of thecutter and capable of adjustment transversely of the blade, the gageblade being adapted to enter one of the notches in the key upon movementof the carriage toward the highest end of the trackways whereby theplate will be disposed at such a height as to cause the blank key to becut at a depth equal to the depth of the notch in the key upon advancingthe plate to the cutter.

7. In a machine of the character described, a base, inclined trackwayson the base, uprights extending from the base, cross bars connectingeach pair of uprights, a cutter supported between the cross bars, a rodsupported in the cross bars in advance of the cutter, a sleeveadjustable on the rod, a gage blade carried by the sleeve and extendinglongitudinally of the base, a carriage slidably mounted in the guides, aplate slidably mounted on the carriage, a key retaining plate slidabletransversely of the first mentioned plate and provided with parallelgrooves to accommodate a pattern key and blank key respectively, thegage entering one of the notches in the pattern key to dispose the firstmentioned plate at the proper elevation upon movement of the carriagetoward the highest end of the inclined track- Ways.

SILAS o, ROREM.

